Question 1

What do sunspots tell us about the Sun's rotation rate?

Accepted Answer

Watching and timing sunspots as they tra...

Question 2

The Solar Neutrino Problem is that we observe more neutrinos than predicted.

Accepted Answer

A) True 
 B)False

Question 3

Solar neutrinos take a little more than eight hours to get from the Sun's core to Earth.

Accepted Answer

A) True 
 B)False

Question 4

Define the solar constant.

Accepted Answer

This is the amount o...

Question 5

The solar corona is much cooler than the Sun's surface; hence, we must wait for a total solar eclipse to glimpse it with the naked eye.

Accepted Answer

A) True 
 B)False

Question 6

The speed of light is 3.00 × 108 m/s. If 2.00 kg of mass is converted to energy, how much energy will be produced?

Accepted Answer

A)   6.00 × 108 J
B)   1.80 × 1017 J
C)   9.00 × 1016 J
D)   1.50 × 108 J
E)   6.00 × 104 J

Question 7

The critical temperature to initiate the proton- proton cycle in the cores of stars is

Accepted Answer

A)   3,000 K.
B)   5,800 K.
C)   2,300,000 K.
D)   10 million K.
E)   100 million K.

Question 8

When we glimpse the chromosphere at the start and end of totality, its color is

Accepted Answer

A)   white from the moonlight.
B)   green (the famous flash) .
C)   blue, due to the ionization of nitrogen by the magnetic fields.
D)   yellow, like the photosphere below it.
E)   red, due to ionized hydrogen at lower pressure.

Question 9

A loop of gas following the magnetic field lines between sunspots' poles is a

Accepted Answer

A)   coronal hole.
B)   prominence.
C)   ray.
D)   flare.
E)   coronal mass ejection.

Question 10

Nuclear _ _ explains the Sun's immense and sustained energy output.

Accepted Answer

The answer of Nuclear _ _ explains the Sun's immense...

Question 11

The thickness of the photosphere is about 100 times the diameter of the Earth, and large sunspots are larger than our whole planet.

Accepted Answer

A) True 
 B)False

Question 12

What happens to most of the solar neutrinos between the Sun's core and Earth?

Accepted Answer

Two- thirds of them transform ...

Question 13

Which of these are NOT associated with the active Sun?

Accepted Answer

A)   flares
B)   aurora
C)   sunspots
D)   granulation
E)   prominences

Question 14

The temperature of the photosphere is about

Accepted Answer

A)   3,200 K.
B)   5,800 K.
C)   11,000 K.
D)   one million K.
E)   ten million K.

Question 15

Granulation is the most obvious proof of solar convective energy transport.

Accepted Answer

A) True 
 B)False

Question 16

During a period of high solar activity, most sunspots lie near the Sun's _.

Accepted Answer

The answer of During a period of high solar activity,...

Question 17

Stellar spectra tell us that is the second most abundant element in the Sun.

Accepted Answer

A)   iron
B)   helium
C)   oxygen
D)   carbon
E)   hydrogen

Question 18

How are sunspots in the northern and southern hemispheres different?

Accepted Answer

Sunspots always come in pairs, with one ...

Question 19

Sunspots usually come in pairs of north and south magnetic poles.

Accepted Answer

A) True 
 B)False

Question 20

Unlike the nuclear reactions in the Sun, everyday chemical reactions involve only the electromagnetic forces.

Accepted Answer

A) True 
 B)False

Exam 10: The Sun: Our Parent Star

The speed of light is 3.00 × 108 m/s. If 2.00 kg of mass is converted to energy, how much energy will be produced?

Correct AnswerverifiedShow Answer

Sunspots usually come in pairs of north and south magnetic poles.

Correct AnswerverifiedShow Answer

What happens to most of the solar neutrinos between the Sun's core and Earth?

Correct AnswerverifiedTwo- thirds of them transform ...View AnswerShow Answer

A loop of gas following the magnetic field lines between sunspots' poles is a

Correct AnswerverifiedShow Answer

Unlike the nuclear reactions in the Sun, everyday chemical reactions involve only the electromagnetic forces.

Correct AnswerverifiedShow Answer

The temperature of the photosphere is about

Correct AnswerverifiedShow Answer

Which of these are NOT associated with the active Sun?

Correct AnswerverifiedShow Answer

The critical temperature to initiate the proton- proton cycle in the cores of stars is

Correct AnswerverifiedShow Answer

Granulation is the most obvious proof of solar convective energy transport.

Correct AnswerverifiedShow Answer

Stellar spectra tell us that is the second most abundant element in the Sun.

Correct AnswerverifiedShow Answer

The thickness of the photosphere is about 100 times the diameter of the Earth, and large sunspots are larger than our whole planet.

Correct AnswerverifiedShow Answer

When we glimpse the chromosphere at the start and end of totality, its color is

Correct AnswerverifiedShow Answer

What do sunspots tell us about the Sun's rotation rate?

Correct AnswerverifiedWatching and timing sunspots as they tra...View AnswerShow Answer

How are sunspots in the northern and southern hemispheres different?

Correct AnswerverifiedSunspots always come in pairs, with one ...View AnswerShow Answer

The Solar Neutrino Problem is that we observe more neutrinos than predicted.

Correct AnswerverifiedShow Answer

Nuclear _ _ explains the Sun's immense and sustained energy output.

Correct AnswerverifiedShow Answer

Define the solar constant.

Correct AnswerverifiedThis is the amount o...View AnswerShow Answer

During a period of high solar activity, most sunspots lie near the Sun's _.

Correct AnswerverifiedShow Answer

Solar neutrinos take a little more than eight hours to get from the Sun's core to Earth.

Correct AnswerverifiedShow Answer

The solar corona is much cooler than the Sun's surface; hence, we must wait for a total solar eclipse to glimpse it with the naked eye.

Correct AnswerverifiedShow Answer

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Two- thirds of them transform ...
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Watching and timing sunspots as they tra...
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Correct Answer
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Sunspots always come in pairs, with one ...
View Answer

Correct Answer
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This is the amount o...
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